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Old 07-29-2021, 06:22 PM   #1
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Our 34 classic maintenance & upgrades

Well ,we finally got the boat around to the boatyard , Chesapeake Cove in Deltaville ,this morning to take care of the annual bottom painting ,hull waxing and zinc replacement. Also upcoming will be the engine cooling water intake seacock replacement & plucking the engine out so we can replace the 43 year old seals & gaskets that are finally showing their age and leaking when the engine is run 1850 or above.
For some reason, when we keep the RPM's around 1650...which is our normal low-cruising rpm anyway ,the bilge stays clean. When we need to push the rpm's to make a bridge opening or fight a tide, the darn thing leaks oil. Not hardly a drop at low speed though. Go figure. I'm pretty sure the majority is coming through the rear main seal. Anyway, oil in the bilge is unacceptable ,as is not being able to run at a higher rpm if we want to, so out comes the engine!
This past winter I called Trans Atlantic and spoke with Sherri. She said that they were really busy at the time but indicated summer would be a better time to get them to spruce up our Perkins. Well, I called them today (sherri was on vacation) but I was told that they were now booked until December! I'm happy that Trans Atlantic Diesel is busy but very disappointed that they won't be able to accommodate us. Luckily for me,I have a friend, Mike West, who owns a diesel repair business and he happened to be installing a generator in a Luhrs at the boatyard where we are. I explained to him my predicament and he said if I bought the motor to his shop, he would go through it for me. So yay! The day was saved! While the engine is out, I'll also replace the clutch damper if it needs it (I'm sure it will) and get Chesapeake Cove to put a clutch pack and seals in our Velvet Drive clutch. Updates for those who want to share my pain to follow!
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Old 07-29-2021, 06:28 PM   #2
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First pic, furniture removed.
2nd- carpet up and hatches removed. Damn that's some ugly paint mainship used to treat their wood.
3rd & 4th- AC pump & strainer removed, raw water strainer removed , exhause system disassembled, alternator removed, electrical ,fuel & water lines to the cabin heater & water heater removed.
Tomorrow, I'll uncouple the shaft & pull it back and unbolt the motor mounts. Maybe it'll be pulled out tomorrow too, if they have time.
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Old 07-29-2021, 07:34 PM   #3
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I few drops now and then can be accomodated by a "diesel diaper".

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Old 07-30-2021, 04:15 AM   #4
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I few drops now and then can be accomodated by a "diesel diaper".

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I've stuck them everywhere I can reach but the trouble is ,on this boat, the engine is tucked down so deep in the middle and so close to the hull in places that it makes it darn near impossible to lay diapers in a lot of places. I wish that ,when Mainship built the boat, they incorporated a couple of bulkheads under the engine with a limber hole tube so the bilge water to pass through but any oil leaks would be contained. There's really not any room for a drip pan.
Like I said, I'll use the engine removal opportunity to replace the damper plate,go through the clutch and perform any other engine room feats that are hindered with the engine in place.

I'm keeping my fingers crossed that I don't open up another can of worms with this project like I have with a couple of the previous projects.
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Old 07-30-2021, 06:23 AM   #5
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The top side of the engine is nice and clean, I'm envious of that. Mine was repainted with poor prep and the wrong shade of blue as well, it really look bad. As I have been replacing cooling components, I have been working everything back to the original blue color.

I have been able to squeeze small disposable backing pans under the engine and laid oil sorb pads across the top of them, I removed them all when I cleaned the cleaned up the port side of the engine during my cooling refresh and need to replace them. I am anxious to see where exactly your oil is/was leaking from. Best of luck.
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Old 07-30-2021, 06:43 AM   #6
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Do you know about the starboard forward engine mount bolts and their reputation for leaking oil?
They are actually studs, and two of them are threaded into a pressurized oil gallery.
You can remove them , one by one, clean the thread and reseal them.
Mine were leaking to the tune of about a quart every 8 engine hours.
After resealing, zero.
Hope this helps.
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Old 07-30-2021, 08:03 AM   #7
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Originally Posted by Gdavid View Post
The top side of the engine is nice and clean, I'm envious of that. Mine was repainted with poor prep and the wrong shade of blue as well, it really look bad. As I have been replacing cooling components, I have been working everything back to the original blue color.

I have been able to squeeze small disposable backing pans under the engine and laid oil sorb pads across the top of them, I removed them all when I cleaned the cleaned up the port side of the engine during my cooling refresh and need to replace them. I am anxious to see where exactly your oil is/was leaking from. Best of luck.
I prepped ours the best I could when we put the new riser ,turbo ,blankets & manifold on a couple of years ago but it's still hard to get everywhere prepped & painted.
I'll come clean with our paint. The flat ,drab Perkins blue just didn't do it for me. I definitely wanted to keep a blue but wanted to add a little pizzazz to it, especially with the shiny new turbo blankets . I used what they call a safety color in Ace Hardware stores. The safety blue almost has a glow to it & that's what you're looking at!
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Old 07-30-2021, 08:07 AM   #8
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Originally Posted by jleonard View Post
Do you know about the starboard forward engine mount bolts and their reputation for leaking oil?
They are actually studs, and two of them are threaded into a pressurized oil gallery.
You can remove them , one by one, clean the thread and reseal them.
Mine were leaking to the tune of about a quart every 8 engine hours.
After resealing, zero.
Hope this helps.
Jay, yes ,you were the one who explained to me about the front starboard studs being drilled through into the oil passage. I did ,in fact, pull them out 1 by one and reseal the threads. It took me 2 tries with Permatex #2 being the winner but that sealed the big leak at that time. Now the rear main seal is in need of attention so it's time to bite the bullet & pull the engine.
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Old 07-30-2021, 08:25 AM   #9
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I used what they call a safety color in Ace Hardware stores. The safety blue almost has a glow to it & that's what you're looking at!
I used the same Ace paint on the outlet elbow on the front side of the engine coming off of the thermostat housing as well as the pipe it connects to along the coolant path to the heat exchanger tank. It is a pretty close match to the paint from my new expansion tank as well the oil& transmission cooler. I wire wheeled and painted everything I could reach on the port side of the engine block and oil pan while I had the raw water pump off. I'll slowly get it the right color and the engine cleaned up in the process. I just got the system back together this week and hopefully am done with engine work for the rest of the season, now it is time to cruise a little further from home.
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Old 07-30-2021, 07:21 PM   #10
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Have you considered any bilge modification to catch miscellaneous drips under the engine while it is out?
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Old 07-30-2021, 10:50 PM   #11
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Shawn, do you have a water cooled turbo ? Looks different than mine. And you have a muffler, I don't. Always wondered about that.
Anyway, big job ahead best of luck and hope it doesn't go south. All my projects seem to also. I'm adding an electric pump to the fuel system next trip to the boat. Can only get 1900 - 2000 rpm out of mine. Like you I run at less but want to have it if needed. I'm thinking air in the lines but I can't find anything loose. Due for a filter change anyway.
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Old 07-31-2021, 05:06 AM   #12
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Have you considered any bilge modification to catch miscellaneous drips under the engine while it is out?
I have.indeed, but I really don't have the time to add another fairly simple but time-consuming project to my plate. It sure would be a nice improvement to the boat ,having an incorporated drip pan under the engine, but the plan is to not have any leaks when the engine goes back so I'll put my attention towards the more pressing modifications, like replacing the crappy engine seawater seacock!
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Old 07-31-2021, 06:06 AM   #13
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Shawn, do you have a water cooled turbo ? Looks different than mine. And you have a muffler, I don't. Always wondered about that.
Anyway, big job ahead best of luck and hope it doesn't go south. All my projects seem to also. I'm adding an electric pump to the fuel system next trip to the boat. Can only get 1900 - 2000 rpm out of mine. Like you I run at less but want to have it if needed. I'm thinking air in the lines but I can't find anything loose. Due for a filter change anyway.
No, the turbo is oil cooled. I can't remember the model but I'm pretty sure it's a Holset.
Dang if I wouldn't look at those fuel filters first. That seems like the usual culprit for a slow-turning engine.
I added an electric pump in the fuel system but it's to assist with priming the system if needed. It ,in theory, can be used to run the engine if the lift pump goes bad but I've never used it that way. I can't remember who it was ,but somebody from this forum warned me that the Cav injection pumps used on Perkins engines were susceptible to blowing out internal seals if they were supplied with too much pressure. Like I said, I haven't run the engine with the electric pump (it's a cheap Chinese e-bay special with the advertised output of 2.5-4 lbs of pressure ,but for all I know it's putting out 25lbs of pressure. I don't think the manufacturing standards in China are too stringent ), I've only primed it (way easier than trying to purge the system with that little plunger on the side of the Perkins lift pump). Guess what? After I installed the electric pump (and at the same time a selector valve to be able to select the tank where the excess fuel returns), our injector pump developed a small leak at [I think] the throttle lever. Nothing that a small piece of absorbent diaper doesn't handle but it sure is a big coincidence that the leak showed up after I modified the fuel system. Another thing that'll be easier to diagnose & repair while the engine is out and sitting in front of me instead of in the boat.
The purpose of my rambling is to warn you of the pressure sensitive Cav pumps being supplied by an electric pump.
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Old 07-31-2021, 07:35 AM   #14
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No, the turbo is oil cooled. I can't remember the model but I'm pretty sure it's a Holset.
Holset 3LD I believe.
You can also use a Holset H1C if you modify the intake hose. This model Turbocharger was used on the early Dodge/Cummins pickup trucks and is very easy to find at a reasonable price and you can still but rebuild kits for them.
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Old 07-31-2021, 08:07 AM   #15
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Solly, I have had the same problem of only reaching 1900-2000 RPM two times in 6 years and each time the problem was fuel restriction cause by the engine mounted filter. After changing the engine mounted fuel filter WOT was no problem.
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Old 07-31-2021, 11:17 AM   #16
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Quote:
Originally Posted by boomerang View Post
No, the turbo is oil cooled. I can't remember the model but I'm pretty sure it's a Holset.
Dang if I wouldn't look at those fuel filters first. That seems like the usual culprit for a slow-turning engine.
I added an electric pump in the fuel system but it's to assist with priming the system if needed. It ,in theory, can be used to run the engine if the lift pump goes bad but I've never used it that way. I can't remember who it was ,but somebody from this forum warned me that the Cav injection pumps used on Perkins engines were susceptible to blowing out internal seals if they were supplied with too much pressure. Like I said, I haven't run the engine with the electric pump (it's a cheap Chinese e-bay special with the advertised output of 2.5-4 lbs of pressure ,but for all I know it's putting out 25lbs of pressure. I don't think the manufacturing standards in China are too stringent ), I've only primed it (way easier than trying to purge the system with that little plunger on the side of the Perkins lift pump). Guess what? After I installed the electric pump (and at the same time a selector valve to be able to select the tank where the excess fuel returns), our injector pump developed a small leak at [I think] the throttle lever. Nothing that a small piece of absorbent diaper doesn't handle but it sure is a big coincidence that the leak showed up after I modified the fuel system. Another thing that'll be easier to diagnose & repair while the engine is out and sitting in front of me instead of in the boat.
The purpose of my rambling is to warn you of the pressure sensitive Cav pumps being supplied by an electric pump.
My CAV pump leaked at throttle lever before rebuild. Since rebuild, not leaking with Walbro electric pump at 6 to 8 psi pressure
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Old 07-31-2021, 12:38 PM   #17
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I have the Holset H1B turbo and having a hard time finding a rebuild kit for it. H1C yep, B no. Hard to find a water cooled turbo at a good price


I bought the Chinese electric pump off Amazon too. Rated for 6-9 lbs pressure. The lift pump is rated for the same from what I have seen and read. I'm sure it will turn out to be a major project
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Old 07-31-2021, 07:44 PM   #18
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Here's our poor girl on the hard. She's in desperate need of a good hull washing. I bought a buffer so maybe it'll make the hull shine one more time. The gelcoat is wearing thin but I'm not in a hull painting mode this year.
The shaft was a SOB to slide back this time. I've slid it back in the past with no issues but this time it didn't want to budge. I loosened the packing gland and removed the set screws from the carrier bearing and then sprayed everything liberally with PB blaster. After emery-clothing the shaft ahead of the bearing I could pry it back a few inches by sticking a screwdriver and then pry bar between the shaft couplings but I wasn't too keen on wedging the shaft back via the couplings. I'm not sure whats going on with it. It must be in the bearing.
A big reason we bought the boat in the first place was the shaft, cutlass bearing & housing ,carrier bearing and stuffing box was all rebuilt just prior to us buying it. Everything still looks about as good as it did when we got it.
I thought removing the doors was going to be a piece of cake because when we rebuilt the flybridge floor several years ago, we also rebuilt the salon door threshold. I removed the doors & frame, rebuilt the threshold under the frame and reinstalled the frame. It admittedly was a little tight because I got too rambunctious with the crown in the cockpit and the center is a little high, but the doors went back in without too much problem. Well this time ,they absolutely would not come out of the frame without me jacking the roof up with a bottle jack. It must be the way the boat is blocked but I can't say I'm looking forward to reinstalling them. That ordeal put me behind a few hours and by the time I was done, I was too hot & tired to tackle the engine removal, so now that's been put off until Monday.I can't seem to ever get ahead of schedule but oh well...at least we're moving in the right direction.
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Old 08-02-2021, 06:29 PM   #19
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OK, we're getting serious with it now. Gee wiz a shooting boom cherry picker makes engine removal easier. That and the engine leveling thing the boatyard let me use instead of just a piece of chain.
The engine came out without a hitch, other than me forgetting to disconnect the throttle cables.
We picked the engine up until it was clear of the salon floor & then kept shortening the boom until the engine got to the transom. We swung the engine around in a athwartship position which allowed the boom to clear the cockpit room overhang where we could pick the engine up & over the transom. It sounds harder than it was.
Once on the ground, I pulled the bell housing off to be able to remove the damper plate. I was figuring on replacing it anyway, just as a matter of preventative maintenance but it was definitely time for replacement! 2 of the springs were broken!
We loaded the blue beast into the back of my pickup ,where I made the 45 minute drive to Gloucester VA to the mechanic. Now shes in his shop where she'll get new seals & a pan gasket. The 2.10:1 Velvet Drive clutch is in the marina's shop where they're going to go through it & replace the seals also, again ,for preventative maintenance.
This weekend I guess I'll wet/dry vac the bilge to get it ready for a new coat of paint. There's still lots to do but there's less than there was!
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Old 08-02-2021, 07:03 PM   #20
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Oh, I forgot to post a picture of the engine area. It's not too impressive with no engine in it. You can tell how tightly the engine was tucked in between the stringers and down close to the hull by not being able to thoroughly clean clean it much less get a paint roller in there! That'll all change here, in the near future.
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